Elevator-door-locking mechanism.



P. G. WIEGERT.

ELEVATOR DOOR LOCKING MECHANISM.

APPLICATION FILED JAN. 26,1915.

Patented Dec. 7, 1915.

2 SHEETSSHEET 1.

WITNESSES INVENTOR COLUMBIA FLANOURAPH :0. WASHINGTON. n. c.

P. G. WIEGERT.

ELEVATOR DOOR LOCKlNG MECHANISM.

APPLICATION FILED JAN. 26, 1915.

Patented Dec. 7, 1915. N 2 SIHEETSSH EET 2. M w. Q} Q s N2 \g N FIG. 3

WITNESSES INVENTOR COLUMHIA PLANOGRM'II co, WASHINGTON. D. C.

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PAULG. WIEG'ERT, OF CLEVELAND, OHIO, ASSIG'NOR T0 THE W. S. TYLERCOMPANY,

. 0F CLEVELAND, OHIO, A CORPORATION OF OHIO.

ELEVATORDOOR-LOGKING MECHANISM.

' Application filed January 26, 1915.

T 0 all whom it may concern Be it known that 1, PAUL Gr. Wrnonnrr, acitizen of the United States, and a resident of Cleveland, in the countyof Cuyahoga and State of Ohio, have invented a new and usefulImprovement in Elevator-Door- Locking Mechanism; and I do hereby declarethe following to be a full, clear, and exact description thereof.

The present invention pertains to elevator door locking mechanism, andrelates particularly to mechanism for locking elevatol doors of the typein which two sliding doors, one of which moves faster than the other,are used.

It is an object of the present invention to improve upon lockingmechanisms for doors of the above type, and to produce a lockingmechanism which will be of a durable and cheap construction and whichwill be absolutely certain in the performance of its function of lockingthe doors.

I have described, by way of example, in the following specification, andshown in the accompanying drawings, one form of locking mechanismconstructed in accord ance with my invention. It will be understood,however, that changes may be made in the structure of the embodimentdescribed and shown, without exceeding the scope of the invention asdefined in the appended claims.

in the drawings: Figure 1 1s a front elevation of the door looking atthe inner side thereof, the operating mechanism and lock being shown inthe position which they assumed when the door sections are in closedposition; Fig. 2 is a front elevation looking at the door from the innerside thereof and showing the door sections in open position; Fig. 3 is afront elevation of the door looking at the inner side thereof andshowing the two door sections in intermediate position between open andclosed position; Fig.

4- is an upper view of the lock member, the pivoted operating bar andthe guide employed in connection therewith. In this view the lock isshown in section to afford a clear disclosure of the internal mechanismthereof. 7

In the accompanyingdrawings the letters A and B designate respectivelythe fast and slow door sections which are mounted by Specification ofLetters Patent.

. carried by the door section B.

Patented Dec. "3, 1915.

Serial No. 1,464.

closed to open position, at a speed which is I greater than that of theslow door B, so that both members A and B will reach their open orclosed position simultaneously. As a means for accomplishing this resultI employ an operating and controlling bar or lever 10 which is of courseformed of metal and is pivoted intermediate its length as at 11 to alaterally extending ear 12, which is nals of the member 10 are providedwith rollers indicated at 13 and 14L. These rollers are adapted torespectively ride during the movement of the door sections in guidemembers designated by the numerals 15 and 16.

The guide member 15 which is attached tothe fast door A consists in twoparallel straps or bars 17 and 18 which are curved outwardly at theirlower terminals away from the side frame member 19 of the door A formingthe transversely ofi-set loop or throat 20. The member 15 may be securedto the frame member 19 of the door A by any suitable fastening devices.The "roller 13 is movable through the guide 15 as is clearly disclosedinliigs. 1, Q'and 3.

The guide 16 is somewhat similar to the member 15 including as it does apair of parallel straps or bars 21 and 22 which are The termii swingingpoint for the member 10. Since the roller 13 15 disposed at the te nlnalof the member 10 and the pivotal point 11 is disposed between themembers and 1%, the roller 13 and conse rently the door A travels agreater distance than the distance traveled by the member 11 in a givenlength of time.

In order to maintain the doors in closed position to guard againstunvise opening, 1. provide a lock desig ated as an entirety in Figs. 1,2 and by the letter F. This lock F which is shown in detail in i,includes as its essential elements a casin or housing 26, a springpressed locking bolt 2?, a latch member 28, a trigger or finger member29 and a link 30 which connects the lock bolt and finger member.

The housing is provided with lateral apertured ears 31, through whichbolts 32 are passed in order to secure the casing in the proper positionon the door A. The bolt 27 is slidable horizontally through the casing26 at the upper terminals thereof. A helical spring interposed betweenthe inner terminal of the bolt 27 and the adjacent wall 34 of thecasing. The spring normally acts as disclosed in F a to not mallyproject the latch :28 into locking engagement with the roller 18. Atubular or other suitable form of guide 35 may be cast integrally withthe meml er for supporting the spring 33 in the proper position. Adepending ear or lug 36 is formed on the bolt 27. This member 36 isprovided with a longitudinal slot as indicated at 3'? to receive thepivotal connecting bolt 38 by which the member 30 is freely connected tothe bolt. An axle 39 is mounted in the casing 36 adjacent the lowerterminal tiereof and immediately above the slot s0 in which the member29 operates. The upper terminal of the member 29 is keyed on the axle 39as is the lever terminal of the link 30. It will thus be seen that thetrigger or finger member 29 may be manipulated to withdraw the bolt 27within the casing against the spring 83.

It should now be noted at the latch member 28 is substantiallytriangular in shape, and that it is fitted at its upper corher as at 41to the web portion formed at the lower end of the guide member 15. Atthe lower and inner corner of the member 28 is attached by means of abolt indicated by dotted lines at as in Fi x' l, the outer terminal ofthe member 27. As shown best in Fig. the outermost corner 4d of thelatch 28 is cut away along an arcuate line to produce an arcuate jawindicated by dotted lines at 45 in Fig. 4. It will be observed upon rference to this figure that when the locking jaw 45 engages the roller13 this member will be retained in fixed position in the throat 20 ofthe guide. Any tend ency of the member 13 to move upwardly will betransmitted into a force acting directly from the w d5 to the pivotalpoint 41. The lower point of the jaw indicated by dotted lines at 46 inFig. d being located a greater distance from the pivotal point 41 thanthe distance from the member ll to the nearest point on the face of theroller 18 makes it impossible for the roller to move upwardly throughthe guide, unless the member is manipulated to withdraw the latch 28from engagement with the roller.

Obviously when the roller 1-3 is locked in the throat 20 of the guide15, the doors A and B will be held against movement, for the doorscannot move except when the member 10 is free to swing,

lVha-t is claimed is:

1. The combination with slidable door sec tions and a frame therefor, ofa guide carried by one door section and having an offset portion at itsend, a controlling member pivotally attached to the other door sect-ionand si dably associated at one end with said guide, means slidablyconnecting one terminal of the controlling member to the frame, andmeans carried by said first mentioned door sect-ion for ice ring thecontrolling member in the ofiset p rtion of said guide whereby the doorsections may be locked in closed position.

2. The combination with slidable door sectiens and a frame therefor, ofa controlling member pivotally connected to and movable with one of thedoor sect-ions, means slidably connecting the terminals of thecontrolling member to the frame and to the other door section, saidcontrolling member and connecting means being disposed so that thecontrolling member is in substantially horizontal position when the doorsections are closed, and means carried by the second mentioned doorsection for locking the controlling member in horizontal positionwhereby the door sections are doubly locked closed position.

3. The combination with slidable door sections which. are adapted tomove at different speeds when being opened or closed and a frame for thedoor sections, of a controlling member pivotally attached intermediateits length to the slow door section, a guide member carried by theframe, a second guide member carried by the fast door section, saidsecond named guide member having an oflset portion at its end, rollerscarried by the terminals of the controlling member and c0- operatingwith saidguide members, and a lock member carried by the fast doorsection for releasably locking the roller in the offset portion of saidsecond named guide member.

4. The combination with slidable door sections mounted to move atdifferent rates of speed of a controlling member pivotally attachedintermediate its length to the slow door section, a relatively fixedguide independent of the door sections, a roller carried by one of thecontrolling members and mounted for sliding movement through the saidfixed guide, a guide member fixed on the fast door section and movabletherewith, said second named guide member having an oil'- set portion atits end, a roller carried by the adjacent terminal of the controllingmember, said last mentioned roller being mounted for movement through.said last mentioned guide, pressed latch member normally engaging saidlast mentioned roller for holding the same in the off-set portion of thelast mentioned. guide member whereby the controlling members is lockedagainst swinging movement for maintaining the door sections in closedposition.

5. The combination with a door frame and a pair of sliding door sectionsassociated therewith, of a substantially vertical guide mounted on saidframe, a substantially vertical guide mounted on one of said sections, abar pivoted to the other section and slidably associated at its endswith said guides, and a lock including an engaging member pivoted to thedoor section which carries said second named guide and coopcrating withsaid bar, and a slidable actuatand a pivotally mounted spring ing memberpivotally connected with said engaging member.

6. The combination with a door frame and a pair of sliding door sectionsassociated therewith, of a substantially vertical guide mounted on saidframe, a substantially vertical guide mounted on one of said sections, abar pivoted to the other section and slidably associated at its endswith said guides, a lock including an engaging member pivoted to thedoor section which carries said second named guide and cooperating withsaid bar,

a slidable actuating member pivotally connected with said engagingmember, and a pivoted trigger for operating said actuatin member. I

T The combination with a door frame and a pair of sliding door sectionsassociated therewith, of a substantially vertical guide mounted on saidframe, a substantially vertical guide mounted on one of said sections,said second named guide having an off-set portion, a bar pivoted to theother section and slidably associated at its ends with said guides, saidbar and guides being so disposed that the bar is substantiallyhorizontal when the door sections are closed, and a lock includinganengaging member pivoted to the door section which carries said secondnamed guide and cooperating with said bar, and a substantiallyhorizontal slidable actuating member for said engaging memher.

In testimony whereof, I the said PAUL G. VVIEGERT, have hereunto set myhand.

PAUL G. VVIEGERT. lVitnesses:

E. P. VIsBRo, J. B. DAVIS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

